libavfilter/vf_limiter.c - manifest_repos/ffmpeg - Git at Google

 /*
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */

 #include "libavutil/attributes.h"
 #include "libavutil/common.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
 #include "avfilter.h"
 #include "formats.h"
 #include "internal.h"
 #include "limiter.h"
 #include "video.h"

 typedef struct ThreadData {
     AVFrame *in;
     AVFrame *out;
 } ThreadData;

 typedef struct LimiterContext {
     const AVClass *class;
     int min;
     int max;
     int planes;
     int nb_planes;
     int linesize[4];
     int width[4];
     int height[4];

     LimiterDSPContext dsp;
 } LimiterContext;

 #define OFFSET(x) offsetof(LimiterContext, x)
 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

 static const AVOption limiter_options[] = {
     { "min",    "set min value", OFFSET(min),    AV_OPT_TYPE_INT, {.i64=0},     0, 65535, .flags = FLAGS },
     { "max",    "set max value", OFFSET(max),    AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, .flags = FLAGS },
     { "planes", "set planes",    OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15},    0,    15, .flags = FLAGS },
     { NULL }
 };

 AVFILTER_DEFINE_CLASS(limiter);

 static av_cold int init(AVFilterContext *ctx)
 {
     LimiterContext *s = ctx->priv;

     if (s->min > s->max)
         return AVERROR(EINVAL);
     return 0;
 }

 static int query_formats(AVFilterContext *ctx)
 {
     static const enum AVPixelFormat pix_fmts[] = {
         AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
         AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
         AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
         AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
         AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
         AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
         AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
         AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
         AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
         AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
         AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
         AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
         AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
         AV_PIX_FMT_NONE
     };

     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
     if (!fmts_list)
         return AVERROR(ENOMEM);
     return ff_set_common_formats(ctx, fmts_list);
 }

 static void limiter8(const uint8_t *src, uint8_t *dst,
                      ptrdiff_t slinesize, ptrdiff_t dlinesize,
                      int w, int h, int min, int max)
 {
     int x, y;

     for (y = 0; y < h; y++) {
         for (x = 0; x < w; x++) {
             dst[x] = av_clip(src[x], min, max);
         }

         dst += dlinesize;
         src += slinesize;
     }
 }

 static void limiter16(const uint8_t *ssrc, uint8_t *ddst,
                       ptrdiff_t slinesize, ptrdiff_t dlinesize,
                       int w, int h, int min, int max)
 {
     const uint16_t *src = (const uint16_t *)ssrc;
     uint16_t *dst = (uint16_t *)ddst;
     int x, y;

     dlinesize /= 2;
     slinesize /= 2;

     for (y = 0; y < h; y++) {
         for (x = 0; x < w; x++) {
             dst[x] = av_clip(src[x], min, max);
         }

         dst += dlinesize;
         src += slinesize;
     }
 }

 static int config_props(AVFilterLink *inlink)
 {
     AVFilterContext *ctx = inlink->dst;
     LimiterContext *s = ctx->priv;
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
     int depth, vsub, hsub, ret;

     s->nb_planes = av_pix_fmt_count_planes(inlink->format);

     if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
         return ret;

     depth = desc->comp[0].depth;
     hsub = desc->log2_chroma_w;
     vsub = desc->log2_chroma_h;
     s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
     s->height[0] = s->height[3] = inlink->h;
     s->width[1]  = s->width[2]  = AV_CEIL_RSHIFT(inlink->w, hsub);
     s->width[0]  = s->width[3]  = inlink->w;

     s->max = FFMIN(s->max, (1 << depth) - 1);
     s->min = FFMIN(s->min, (1 << depth) - 1);

     if (depth == 8) {
         s->dsp.limiter = limiter8;
     } else {
         s->dsp.limiter = limiter16;
     }

     if (ARCH_X86)
         ff_limiter_init_x86(&s->dsp, desc->comp[0].depth);

     return 0;
 }

 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
 {
     LimiterContext *s = ctx->priv;
     ThreadData *td = arg;
     AVFrame *in = td->in;
     AVFrame *out = td->out;
     int p;

     for (p = 0; p < s->nb_planes; p++) {
         const int h = s->height[p];
         const int slice_start = (h * jobnr) / nb_jobs;
         const int slice_end = (h * (jobnr+1)) / nb_jobs;

         if (!((1 << p) & s->planes)) {
             if (out != in)
                 av_image_copy_plane(out->data[p] + slice_start * out->linesize[p],
                                     out->linesize[p],
                                     in->data[p] + slice_start * in->linesize[p],
                                     in->linesize[p],
                                     s->linesize[p], slice_end - slice_start);
             continue;
         }

         s->dsp.limiter(in->data[p] + slice_start * in->linesize[p],
                        out->data[p] + slice_start * out->linesize[p],
                        in->linesize[p], out->linesize[p],
                        s->width[p], slice_end - slice_start,
                        s->min, s->max);
     }

     return 0;
 }

 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
 {
     AVFilterContext *ctx = inlink->dst;
     LimiterContext *s = ctx->priv;
     AVFilterLink *outlink = ctx->outputs[0];
     ThreadData td;
     AVFrame *out;

     if (av_frame_is_writable(in)) {
         out = in;
     } else {
         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
         if (!out) {
             av_frame_free(&in);
             return AVERROR(ENOMEM);
         }
         av_frame_copy_props(out, in);
     }

     td.out = out;
     td.in = in;
     ctx->internal->execute(ctx, filter_slice, &td, NULL,
                            FFMIN(s->height[2], ff_filter_get_nb_threads(ctx)));
     if (out != in)
         av_frame_free(&in);

     return ff_filter_frame(outlink, out);
 }

 static const AVFilterPad inputs[] = {
     {
         .name         = "default",
         .type         = AVMEDIA_TYPE_VIDEO,
         .filter_frame = filter_frame,
         .config_props = config_props,
     },
     { NULL }
 };

 static const AVFilterPad outputs[] = {
     {
         .name = "default",
         .type = AVMEDIA_TYPE_VIDEO,
     },
     { NULL }
 };

 AVFilter ff_vf_limiter = {
     .name          = "limiter",
     .description   = NULL_IF_CONFIG_SMALL("Limit pixels components to the specified range."),
     .priv_size     = sizeof(LimiterContext),
     .priv_class    = &limiter_class,
     .init          = init,
     .query_formats = query_formats,
     .inputs        = inputs,
     .outputs       = outputs,
     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
 };
	/*
	* This file is part of FFmpeg.
	*
	* FFmpeg is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* FFmpeg is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with FFmpeg; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include "libavutil/attributes.h"
	#include "libavutil/common.h"
	#include "libavutil/imgutils.h"
	#include "libavutil/opt.h"
	#include "libavutil/pixdesc.h"
	#include "avfilter.h"
	#include "formats.h"
	#include "internal.h"
	#include "limiter.h"
	#include "video.h"

	typedef struct ThreadData {
	AVFrame *in;
	AVFrame *out;
	} ThreadData;

	typedef struct LimiterContext {
	const AVClass *class;
	int min;
	int max;
	int planes;
	int nb_planes;
	int linesize[4];
	int width[4];
	int height[4];

	LimiterDSPContext dsp;
	} LimiterContext;

	#define OFFSET(x) offsetof(LimiterContext, x)
	#define FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM

	static const AVOption limiter_options[] = {
	{ "min", "set min value", OFFSET(min), AV_OPT_TYPE_INT, {.i64=0}, 0, 65535, .flags = FLAGS },
	{ "max", "set max value", OFFSET(max), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, .flags = FLAGS },
	{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS },
	{ NULL }
	};

	AVFILTER_DEFINE_CLASS(limiter);

	static av_cold int init(AVFilterContext *ctx)
	{
	LimiterContext *s = ctx->priv;

	if (s->min > s->max)
	return AVERROR(EINVAL);
	return 0;
	}

	static int query_formats(AVFilterContext *ctx)
	{
	static const enum AVPixelFormat pix_fmts[] = {
	AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
	AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
	AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
	AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
	AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
	AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
	AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
	AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
	AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
	AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
	AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
	AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
	AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
	AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
	AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
	AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
	AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
	AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
	AV_PIX_FMT_NONE
	};

	AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
	if (!fmts_list)
	return AVERROR(ENOMEM);
	return ff_set_common_formats(ctx, fmts_list);
	}

	static void limiter8(const uint8_t src, uint8_t dst,
	ptrdiff_t slinesize, ptrdiff_t dlinesize,
	int w, int h, int min, int max)
	{
	int x, y;

	for (y = 0; y < h; y++) {
	for (x = 0; x < w; x++) {
	dst[x] = av_clip(src[x], min, max);
	}

	dst += dlinesize;
	src += slinesize;
	}
	}

	static void limiter16(const uint8_t ssrc, uint8_t ddst,
	ptrdiff_t slinesize, ptrdiff_t dlinesize,
	int w, int h, int min, int max)
	{
	const uint16_t src = (const uint16_t )ssrc;
	uint16_t dst = (uint16_t )ddst;
	int x, y;

	dlinesize /= 2;
	slinesize /= 2;

	for (y = 0; y < h; y++) {
	for (x = 0; x < w; x++) {
	dst[x] = av_clip(src[x], min, max);
	}

	dst += dlinesize;
	src += slinesize;
	}
	}

	static int config_props(AVFilterLink *inlink)
	{
	AVFilterContext *ctx = inlink->dst;
	LimiterContext *s = ctx->priv;
	const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
	int depth, vsub, hsub, ret;

	s->nb_planes = av_pix_fmt_count_planes(inlink->format);

	if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
	return ret;

	depth = desc->comp[0].depth;
	hsub = desc->log2_chroma_w;
	vsub = desc->log2_chroma_h;
	s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
	s->height[0] = s->height[3] = inlink->h;
	s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
	s->width[0] = s->width[3] = inlink->w;

	s->max = FFMIN(s->max, (1 << depth) - 1);
	s->min = FFMIN(s->min, (1 << depth) - 1);

	if (depth == 8) {
	s->dsp.limiter = limiter8;
	} else {
	s->dsp.limiter = limiter16;
	}

	if (ARCH_X86)
	ff_limiter_init_x86(&s->dsp, desc->comp[0].depth);

	return 0;
	}

	static int filter_slice(AVFilterContext ctx, void arg, int jobnr, int nb_jobs)
	{
	LimiterContext *s = ctx->priv;
	ThreadData *td = arg;
	AVFrame *in = td->in;
	AVFrame *out = td->out;
	int p;

	for (p = 0; p < s->nb_planes; p++) {
	const int h = s->height[p];
	const int slice_start = (h * jobnr) / nb_jobs;
	const int slice_end = (h * (jobnr+1)) / nb_jobs;

	if (!((1 << p) & s->planes)) {
	if (out != in)
	av_image_copy_plane(out->data[p] + slice_start * out->linesize[p],
	out->linesize[p],
	in->data[p] + slice_start * in->linesize[p],
	in->linesize[p],
	s->linesize[p], slice_end - slice_start);
	continue;
	}

	s->dsp.limiter(in->data[p] + slice_start * in->linesize[p],
	out->data[p] + slice_start * out->linesize[p],
	in->linesize[p], out->linesize[p],
	s->width[p], slice_end - slice_start,
	s->min, s->max);
	}

	return 0;
	}

	static int filter_frame(AVFilterLink inlink, AVFrame in)
	{
	AVFilterContext *ctx = inlink->dst;
	LimiterContext *s = ctx->priv;
	AVFilterLink *outlink = ctx->outputs[0];
	ThreadData td;
	AVFrame *out;

	if (av_frame_is_writable(in)) {
	out = in;
	} else {
	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
	if (!out) {
	av_frame_free(&in);
	return AVERROR(ENOMEM);
	}
	av_frame_copy_props(out, in);
	}

	td.out = out;
	td.in = in;
	ctx->internal->execute(ctx, filter_slice, &td, NULL,
	FFMIN(s->height[2], ff_filter_get_nb_threads(ctx)));
	if (out != in)
	av_frame_free(&in);

	return ff_filter_frame(outlink, out);
	}

	static const AVFilterPad inputs[] = {
	{
	.name = "default",
	.type = AVMEDIA_TYPE_VIDEO,
	.filter_frame = filter_frame,
	.config_props = config_props,
	},
	{ NULL }
	};

	static const AVFilterPad outputs[] = {
	{
	.name = "default",
	.type = AVMEDIA_TYPE_VIDEO,
	},
	{ NULL }
	};

	AVFilter ff_vf_limiter = {
	.name = "limiter",
	.description = NULL_IF_CONFIG_SMALL("Limit pixels components to the specified range."),
	.priv_size = sizeof(LimiterContext),
	.priv_class = &limiter_class,
	.init = init,
	.query_formats = query_formats,
	.inputs = inputs,
	.outputs = outputs,
	.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC \| AVFILTER_FLAG_SLICE_THREADS,
	};